Piston cooling jet



FIG. 1 is a front elevated view of a piston cooling jet showing our new design;

FIG. 2 is a back view of the piston cooling jet shown in FIG. 1;

FIG. 3 is a front view of the piston cooling jet shown in FIG. 1;

FIG. 4 is a side view of the piston cooling jet shown in FIG. 1;

FIG. 5 is a side view of the piston cooling jet shown in FIG. 1;

FIG. 6 is a top view of the piston cooling jet shown in FIG. 1;

FIG. 7 is a bottom view of the piston cooling jet shown in FIG. 1;

FIG. 8 is a bottom view of a portion of the piston cooling jet shown in FIG. 1 and taken from line 8-8 of FIG. 7; and,

FIG. 9 is a side cross sectional view of the piston cooling jet shown in FIG. 1 and taken from line 9-9 of FIG. 6.

Broken lines shown in the drawings illustrate environmental structure only and form no part of the claimed design.

The piston cooling jet shown herein are used to convey cooling fluid from an engine cylinder block to a piston head. Various views shown in the attached drawings illustrate curved arms that include multiple arcuate surfaces, including curved layering. In addition, the piston cooling jet has a crossed interior end arm when viewed looking down the arm. The interior surfaces of each arm of the piston cooling jet also have a tapered arcuate surface.

The cut away portions in the drawings indicate the appearance of any portion of the article between the cutaway lines forms no part of the claimed design. 

CLAIM The ornamental design for a piston cooling jet, as shown and described. 